Product Overview

The torque rod bush, OEM number 550800, is a rubber-metal bushing used in the torque rod/tie bar suspension mounting on Scania heavy-duty trucks and buses, covering the 2/3 Series, 4 Series, P/G/R/T Series, and Scania Bus platforms, in the standard 65mm bogie size for 6x4 and 8x4 axle configurations. Since this bushing spans several Scania truck generations, it's a steady wear-and-replace item for fleets and workshops servicing Scania heavy-duty vehicles.

Worn units typically show up as clunking or knocking noise from the rear axle under acceleration or braking, uneven tire wear, or visible movement at the torque rod mounting point. GSK Auto manufactures this bushing to OEM specification at our Ningbo, China facility, with every unit tested before packing. We supply at wholesale volume with low MOQ and support private label packaging, with our team available to confirm fitment before shipping.

Replacement OEM Numbers

Cross-Reference OEM Number

550821, 550806, 550807, 550808, 639319, 1498131, 20490496, 7420490496

(Confirm against your VIN or chassis code before ordering — these are commonly listed cross-references for this application, not a guarantee of exact fitment for every variant.)

What Is a Torque Rod Bush?

Function: The torque rod bush (also called a tie bar bush) mounts the torque rod, which connects the axle to the truck's chassis on bogie/tandem axle suspension, absorbing torque generated during acceleration and braking.

Working Principle: The rubber-metal bushing cushions the connection point of the torque rod, allowing controlled movement while transferring driving and braking forces between the axle and chassis, helping maintain wheel alignment and stability.

Importance: On a heavy-duty truck or bus platform carrying variable loads over long distances, a worn torque rod bush can affect axle alignment, ride stability, and tire wear.

Common Failures & Signs: Cracked, dried, or perished rubber causing looseness. Clunking or knocking noise from the rear axle under acceleration or braking. Uneven tire wear from misalignment. Visible movement or wear at the torque rod mounting point.

Key Features

OEM-standard fitment - matches factory mounting and specification for the 550800 application, standard 65mm size.

Precision manufacturing - rubber-metal construction built to tight tolerance for a secure, durable fit.

Long service life - built to handle sustained heavy-duty truck and bus use.

Excellent fitment - direct bolt-in replacement, no modification required.

Corrosion resistance - metal components resist moisture and road exposure.

Tested before shipment - every unit checked before packing.

Reliable performance - restores factory stability and alignment.

Benefits

Importers - covers torque rod bush demand across multiple Scania truck and bus platforms from one part number.

Wholesalers - steady demand from heavy-duty truck maintenance and repair markets.

Repair Shops - tested unit reduces comeback risk on suspension repairs.

Distributors - private label packaging available for building a branded catalog.

End Customers - restored stability, alignment, and reduced suspension noise.

Packaging & Shipping

Standard export cartons. Customized packaging available for distributor branding. OEM-style and private label printing on request. Container loading handled directly, with mixed-SKU consolidation for smaller orders. Worldwide shipping to Europe, North America, South America, the Middle East, Africa, and Southeast Asia.

Frequently Asked Questions

• What does this bush do?

It mounts the torque rod connecting the axle to the chassis on bogie suspension, absorbing torque and maintaining alignment.

• Which vehicles use OEM 550800?

Scania 2/3 Series, 4 Series, P/G/R/T Series, and Scania Bus, 65mm bogie suspension, 6x4 and 8x4 — confirm exact chassis code before ordering.

• Can GSK Auto supply OEM-standard parts?

Yes, this torque rod bush is manufactured to match OEM specification for fitment and performance.

• What's the MOQ for wholesale orders?

MOQ varies by order type — contact us directly for current wholesale tiers.

• Do you export worldwide?

Yes, we ship to Europe, North America, South America, the Middle East, Africa, and Southeast Asia.

• Can you customize packaging?

Yes, OEM-style and private label printing are available.

• How do I know if this bush needs replacing?

Common signs include clunking noise under acceleration or braking, uneven tire wear, or visible wear at the mounting point.

Why Choose GSK Auto

GSK Auto manufactures factory-direct, keeping pricing tied to production cost. This torque rod bush is built to OEM specification and tested before packing. We support low MOQ, private label packaging, and worldwide shipping, with our technical team available to confirm fitment before you order.

Call to Action

Sourcing torque rod bushes for Scania 3 Series, 4 Series, P/G/R/T Series, or Scania Bus? Contact GSK Auto for a wholesale quote, catalog, or OEM/private label cooperation.